A.速算扣除数是按全额累进税率计算的应纳税额与按超额累进税率计算的应纳税额的差额
B.速算扣除数是按超倍累进税率计算的应纳税额与按超额累进税率计算的应纳税额的差额
C.速算扣除数是按超率累进税率计算的应纳税额与按超额累进税率计算的应纳税额的差额
D.速算扣除数是按超额累进税率计算的应纳税额与按比例税率计算的应纳税额的差额
第1题
A.10000
B.100,00.
C.100000
D.1000,00
第2题
How many kinds of over-the-counter drugs are sold in the United States?
A. 2,000.
B. 100,000.
C. 170,000.
D. 5,000,000,000.
第3题
According to the passage, which of the following statements is NOT true?
A.Every few 100,000 years undergoes a dramatic polarity reversal and thus we could say that magnetic field is quite steady going.
B.Groundbreaking research by two French geophysicists contributed a lot to the cause of magnetic field"s being generated.
C.Although the strength of the magnetic field varies irregularly during the short terra, there seems to be an inevitable long-term decline preceding each polarity reversal.
D.The French geophysicists" experiment result has aroused great debates among the field.
第4题
Part of the reason is technical. Understanding. and then altering, the genes of a big pine tree are more complex than creating a better tomato. While tomatoes sprout happily, and rapidly, in the laboratory, growing a whole tree from a single, genetically altered cell in a test tube is a tricky process that takes years, not months. Moreover. little is known about tree genes. Some trees, such as pine trees. have a lot of DNA-roughly ten times as much as human. And, whereas the Human Genome Project is more than half-way throughits task of isolating and sequencing the estimated 100,00 genes in human cells. similar efforts to analyzetree genes are still just saplings (幼苗).
Given the large number of tree genes and the little that is known about them, tree engineers are starting with a search for genetic "markers". The first step is to isolate DNA from trees with desirable propertiessuch as insect resistance. The next step is to find stretches of DNA that show the presence of a particular gene. Then, when you mate two trees with different desirable properties, it is simple to check which offspring contain them all by looking for the genetic markers. Henry Amerson, at North Carolina State University, is using genetic markers to breed fungal resistance into southern pines. Billions of these are grown across America for pulp and paper, and outbreaks of disease are expensive. But not all individual trees are susceptible. Dr. Amerson’s group has found markers that distinguish fungus-resistant stock from disease-prone trees.Using traditional breeding techniques, they are introducing the resistance genes into pines on test sites in America.
Using generic markers speeds up old-fashioned breeding methods becauseyou no longer have to wait for the tree to grow up to see if it has the desiredtraits. But it is more a sophisticated form. of selective breeding. Now. however.interest in genetic tinkering (基因修补) is also gaining ground. To this end, Dr.Amerson and his colleagues are taking part in the Pine Gene Discovery Project. an initiative to identify and sequence the 50,000-odd genes in the pine tree&39;s genome. Knowing which gene does what should make it easier to know what to alter.
测试题
Compared with genetic engineering of food crops, genetic engineering of trees____________________.
A.began much later
B.has developed more slowly
C.is less useful
D.was less controversial
第5题
A.Provideresourcestoaproject
B.Requestrequirementschanges
C.Resolveteamconflicts
D.Controltheprojectbudget
第6题
A.projectplan.
B.projectcharter.
C.communicationplan.
D.WBS(WorkBreakdownStructure).
第7题
A.Documentlessonslearned
B.Assignresponsibility
C.Closebudget
D.Beginnewproject
第8题
A.ProjectManager
B.Stakeholder
C.Customer
D.ExecutiveSponsor
第9题
A.DesignAcceptance
B.CodeAcceptance
C.ModuleAcceptance
D.SiteAcceptance
第10题
A.sourcecode.
B.passwords.
C.lessonslearned.
D.testresults.
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